The Missile Defense Agency awarded Raytheon [RTN] a $1.5 billion indefinite delivery/indefinite quantity follow-on contract to support the Army Navy Transportable Radar Surveillance Model 2 (AN/TPY-2) and Sea-Based X-Band (SBX) radars, the Defense Department said Oct. 27.

The AN/TPY-2, built by Raytheon, is used for Terminal High Altitude Area Defense (THAAD) missile defense systems to detect, classify, and track ballistic missiles. It operates in the X-band and consists of two modes. Forward-based mode detects missiles as they ascend while terminal mode guides interceptors to a falling target.

The SBX is a modified semi-submersible oil-drilling platform that is intended to provide strong discrimination capabilities as it tracks long-range ballistic missiles over the Pacific Ocean for the Ground-Based Midcourse Defense (GMD) missile defense system. Raytheon built the SBX radar under GMD prime contractor Boeing [BA].

MDA Director Lt. Gen. Sam Greaves confirmed to sister publication Defense Daily in an email that “this is not new work but a new contract supporting X-band radar operations and sustainment activities previously performed by Raytheon.”

Under this cost-plus-fixed-fee and cost-plus-incentive-fee line item contract, Raytheon is set to provide operations and sustainment for the radars including logistics support, sustaining engineering, transition and transfer, and depot transition for the AN/TPY-2, and logistics support and sustaining engineering for the SBX.

The ordering period last from Nov. 2017 through Oct. 2020 and includes four one-year option periods.

This was a sole-source acquisition with over $1 million obligated at award time. Work is set to occur in Woburn, Mass,. as well as other U.S. and overseas locations.